Abstract
For development of single cross hybrids in maize, developed inbreds must be evaluated for the determination of highly heterotic inbred combination (HIC). One of the best methodologies for determination of heterotic inbred combination can be multivariate analysis (MVA) or scales of phenotypic distance or dissimilarities or cluster diagram. For it, inbred must be observed for useful trait measurements. Accordingly, an experimental evaluation was conducted including promising 55 inbred lines of winter maize planting on Sep 3, 2015 at National Maize Research Program Rampur, Chitwan Nepal (NMRP/NARC). The distant inbred lines were determined through MVA. Single plot research technique was done where each inbred line was provided with 2 rows of 20 plants each. Data were taken for fifteen traits. By the use of MINITAB software, the data was analysed. Graphics of principle component analysis (PCA) cluster diagram (CD or dendogram) were constructed and phenotypic dissimilarities are examined.The distant inbreds RML-8, RML-88, RML-13, RML-103, RML-89, RML-102, RML-11, RML-17, RML-83,RML-98,RML-85,RML-86,RML-94 and RML-28 could be crossed with RML-75,RML-6,RML-68,RML-36 and RML-32 which could be used as tester inbred for heterotic hybrid combination. Similarly, RML-98, RML-85, RML-86, RML-94 and RML-28 could be crossed with RML-24, RML-96 and RML-99. Though distant inbred, RML-104 had less ASI but it wasn’t feasible to use for crossing due to higher anthesis tasseling interval.Int J Appl Sci Biotechnol, Vol 4(3): 359-364
Highlights
Maize (Zea mays L.) is one of the most important cereal crops cultivated worldwide, belonging to family graminaceae
The inbreds RML-8, RML-88, RML13, RML-103, RML-104, RML-98, RML-85, RML-89, RML-86, RML-102, RML-11, RML-17, RML-83, RML90, RML-94 were phenotypically distant from the inbreds RML-24, RML-96, RML-75, RML-6, RML-91, RML-68, RML-37, RML-36, RML-32 and RML-99
Same type of result was reported by Karanja et al, 2009.Maize inbred lines such as EM11-133, CML 395, CML 202, CML 442, CML 444, CML 312 were in one group while as EM12-210, CML208 and CML204 were in other group leaving OSU23i alone
Summary
Maize (Zea mays L.) is one of the most important cereal crops cultivated worldwide, belonging to family graminaceae. It is important for human consumption but it is used as feed for animals. It provides raw materials for manufacture of many industrial products from food processing to manufacturing of ethanol. It has leading position both in case of production and productivity. Maize is ranked in second position after rice in terms of area and production with the productivity of 2.458 t/ha. The demand is increasing for food; feed and industrial use (CDD, 2012). In Nepal, The trend of feed demand is increasing at the rate of 11% per annum (CDD, 2012). There is a huge scope of expanding the poultry industry by 3 folds by the 10 yrs, since the rate of poultry industries expansion is 8.7%
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
